# Peak vs Lagary OneFlow

The clearest difference is in-app purchases: Lagary OneFlow at none against Peak's 10. Lagary OneFlow also leads on ads (none vs shown) and update cadence (every 5 days vs fortnightly). Peak's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.6). On price there is nothing between them.

Both are free to download. Peak sells 10 in-app purchases, starting at $2.99 per month. Lagary OneFlow asks for nothing beyond the download.

Peak ships an update fortnightly, Lagary OneFlow every 5 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Peak | Lagary OneFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (146K ratings)](https://appshunter.io/ios/app/peak-brain-training/id806223188/reviews)** | — |
| Number of ratings | **146K** | — |
| Positive reviews | 63.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 321 MB | 42 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Synaptic Labs](https://appshunter.io/developer/1751726088) | [Lagary Systems, Inc](https://appshunter.io/developer/1705480493) |

## What reviewers say

### Peak

[App page](https://appshunter.io/ios/app/peak-brain-training/id806223188)

Enhance your cognitive abilities with over 45 engaging games designed to improve memory, attention, problem-solving, and more. Track your progress with detailed insights and compete with friends. A free basic version is available, with an optional Pro upgrade for a full brain training experience.

**Highlights:** 45+ brain training games, Daily Workouts, Coffee Break mode, Performance insights and statistics, Advanced Training modules, Compete with friends

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 40% Off Peak Pro Monthly | $2.99 | per month |
| Peak Pro | $3.99 | per month |
| Peak Pro Plan | $3.99 | per month |
| Peak Pro Plan | $4.99 | per month |
| Peak Pro | $11.99 | per year |
| 40% Off Peak Pro Yearly | $19.99 | per year |
| Peak Pro Plan | $34.99 | per year |
| Peak pro | $34.99 | per year |
| Advanced Training Peak & Brainways Working Memory Part 1 | Free | one-time |
| Advanced Training Peak & UCL Emotion Management | Free | one-time |

**What reviewers like**

- 💪 Challenging and engaging games
- 🧠 Effective brain training
- 📊 Detailed progress tracking
- 🔍 Variety of game categories
- 🤩 Enjoyable and fun to play

**What reviewers complain about**

- 🔍 Limited free games
- 💰 Expensive subscription
- 🔁 Repetitive game content
- 🐛 Bugs and glitches
- 🤖 Inconsistent dictionary

**Reported bugs**

- Freezing and crashing issues
- Inconsistent game performance
- Incorrect scoring and ranking
- Syncing and login problems

**Requested features**

- More free games and content
- Ability to replay games without ads
- Improved game instructions and feedback
- More coordination and emotion-based games
- Customizable brain training experience


### Lagary OneFlow

[App page](https://appshunter.io/ios/app/lagary-oneflow/id6751433969)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Peak free?

Peak is free to download, with in-app purchases available.

### Is Lagary OneFlow free?

Lagary OneFlow is free to download, with no in-app purchases.

### Do Peak or Lagary OneFlow have ads?

Peak shows ads; Lagary OneFlow does not.

### Which is updated more often, Peak or Lagary OneFlow?

Peak ships an update fortnightly, and Lagary OneFlow every 5 days. Most recently, Peak was updated on November 4, 2026 and Lagary OneFlow on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*